# 营销活动响应表结构
marketing_response = [
    ("campaign_id", "string", "活动ID"),
    ("user_id", "string", "用户ID"),
    ("campaign_type", "string", "活动类型"),
    ("exposure_time", "timestamp", "曝光时间"),
    ("click_time", "timestamp", "点击时间"),
    ("conversion_time", "timestamp", "转化时间"),
    ("conversion_type", "string", "转化类型"),
    ("conversion_value", "double", "转化价值"),
]